Add sample RayTracing. (#361)

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "Vulkan-Headers"]
 	path = Vulkan-Headers
 	url = https://github.com/KhronosGroup/Vulkan-Headers.git
+[submodule "glfw"]
+	path = glfw
+	url = https://github.com/glfw/glfw

CMakeLists.txt

@@ -79,6 +79,7 @@ target_include_directories(VulkanHppGenerator PRIVATE "${CMAKE_SOURCE_DIR}/tinyx
 
 option (SAMPLES_BUILD OFF)
 if (SAMPLES_BUILD)
+  add_subdirectory(glfw)
   add_subdirectory(glslang)
   add_subdirectory(samples)
 endif (SAMPLES_BUILD)

Vulkan-Headers

@@ -1 +1 @@
-Subproject commit 097a1045098213919fd56442f52c716fc78eeb27
+Subproject commit 552e49ee964e138352fbc0ecac3a16ca052ea7cb

glfw

@@ -0,0 +1 @@
+Subproject commit 3a5e99e59a74aae9cb74dbd1170374aec9ecc6a2

samples/RayTracing/CMakeLists.txt

@@ -0,0 +1,55 @@
+# Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required(VERSION 3.2)
+
+project(RayTracing)
+
+set(HEADERS
+  CameraManipulator.hpp
+  ../utils/shaders.hpp
+  ../utils/utils.hpp
+)
+
+set(SOURCES
+  CameraManipulator.cpp
+  RayTracing.cpp
+  ../utils/shaders.cpp
+  ../utils/utils.cpp
+  ../../glslang/StandAlone/ResourceLimits.cpp
+)
+
+source_group(headers FILES ${HEADERS})
+source_group(sources FILES ${SOURCES})
+
+add_executable(RayTracing
+  ${HEADERS}
+  ${SOURCES}
+)
+
+set_target_properties(RayTracing PROPERTIES FOLDER "Samples")
+target_include_directories(RayTracing PUBLIC
+  ${CMAKE_SOURCE_DIR}/glslang
+  ${CMAKE_SOURCE_DIR}/glfw/include
+  ${CMAKE_SOURCE_DIR}/samples/RayTracing/common
+  ${CMAKE_SOURCE_DIR}/samples/RayTracing/vulkannv 
+  ${CMAKE_SOURCE_DIR}/stb
+  ${CMAKE_SOURCE_DIR}/tinyobjloader
+  )
+
+target_link_libraries(RayTracing PUBLIC glslang SPIRV
+  legacy_stdio_definitions.lib
+  ${CMAKE_SOURCE_DIR}/builds/VS2017_64/glfw/src/Debug/glfw3.lib
+  "${Vulkan_LIBRARIES}"
+  )

samples/RayTracing/CameraManipulator.cpp

@@ -0,0 +1,428 @@
+// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "CameraManipulator.hpp"
+
+#include <glm/glm.hpp>
+#include <glm/gtx/rotate_vector.hpp>
+
+namespace vk
+{
+  namespace su
+  {
+    const float trackballSize = 0.8f;
+
+    //-----------------------------------------------------------------------------
+    // MATH functions
+    //
+    template <typename T>
+    bool isZero(const T& _a)
+    {
+      return fabs(_a) < std::numeric_limits<T>::epsilon();
+    }
+    template <typename T>
+    bool isOne(const T& _a)
+    {
+      return areEqual(_a, (T)1);
+    }
+    inline float sign(float s)
+    {
+      return (s < 0.f) ? -1.f : 1.f;
+    }
+
+    CameraManipulator::CameraManipulator()
+    {
+      update();
+    }
+
+    glm::vec3 const& CameraManipulator::getCameraPosition() const
+    {
+      return m_cameraPosition;
+    }
+
+    glm::vec3 const& CameraManipulator::getCenterPosition() const
+    {
+      return m_centerPosition;
+    }
+
+    glm::mat4 const& CameraManipulator::getMatrix() const
+    {
+      return m_matrix;
+    }
+
+    CameraManipulator::Mode CameraManipulator::getMode() const
+    {
+      return m_mode;
+    }
+
+    glm::ivec2 const& CameraManipulator::getMousePosition() const
+    {
+      return m_mousePosition;
+    }
+
+    float CameraManipulator::getRoll() const
+    {
+      return m_roll;
+    }
+
+    float CameraManipulator::getSpeed() const
+    {
+      return m_speed;
+    }
+
+    glm::vec3 const& CameraManipulator::getUpVector() const
+    {
+      return m_upVector;
+    }
+
+    glm::u32vec2 const& CameraManipulator::getWindowSize() const
+    {
+      return m_windowSize;
+    }
+
+    CameraManipulator::Action CameraManipulator::mouseMove(glm::ivec2 const& position, MouseButton mouseButton, ModifierFlags & modifiers)
+    {
+      Action curAction = Action::None;
+      switch (mouseButton)
+      {
+        case MouseButton::Left:
+          if (((modifiers & ModifierFlagBits::Ctrl) && (modifiers & ModifierFlagBits::Shift)) || (modifiers & ModifierFlagBits::Alt))
+          {
+            curAction = m_mode == Mode::Examine ? Action::LookAround : Action::Orbit;
+          }
+          else if (modifiers & ModifierFlagBits::Shift)
+          {
+            curAction = Action::Dolly;
+          }
+          else if (modifiers & ModifierFlagBits::Ctrl)
+          {
+            curAction = Action::Pan;
+          }
+          else
+          {
+            curAction = m_mode == Mode::Examine ? Action::Orbit : Action::LookAround;
+          }
+          break;
+        case MouseButton::Middle:
+          curAction = Action::Pan;
+          break;
+        case MouseButton::Right:
+          curAction = Action::Dolly;
+          break;
+        default:
+          assert(false);
+      }
+      assert(curAction != Action::None);
+      motion(position, curAction);
+
+      return curAction;
+    }
+
+    void CameraManipulator::setLookat(const glm::vec3& cameraPosition, const glm::vec3& centerPosition, const glm::vec3& upVector)
+    {
+      m_cameraPosition  = cameraPosition;
+      m_centerPosition  = centerPosition;
+      m_upVector        = upVector;
+      update();
+    }
+
+    void CameraManipulator::setMode(Mode mode)
+    {
+      m_mode = mode;
+    }
+
+    void CameraManipulator::setMousePosition(glm::ivec2 const& position)
+    {
+      m_mousePosition = position;
+    }
+
+    void CameraManipulator::setRoll(float roll)
+    {
+      m_roll = roll;
+      update();
+    }
+
+    void CameraManipulator::setSpeed(float speed)
+    {
+      m_speed = speed;
+    }
+
+    void CameraManipulator::setWindowSize(glm::ivec2 const& size)
+    {
+      m_windowSize = size;
+    }
+
+    void CameraManipulator::wheel(int value)
+    {
+      float fValue = static_cast<float>(value);
+      float dx = (fValue * abs(fValue)) / static_cast<float>(m_windowSize[0]);
+
+      glm::vec3 z = m_cameraPosition - m_centerPosition;
+      float length = z.length() * 0.1f;
+      length = length < 0.001f ? 0.001f : length;
+
+      dx *= m_speed;
+      dolly(glm::vec2(dx, dx));
+      update();
+    }
+
+    void CameraManipulator::dolly(glm::vec2 const& delta)
+    {
+      glm::vec3 z      = m_centerPosition - m_cameraPosition;
+      float     length = glm::length(z);
+
+      // We are at the point of interest, and don't know any direction, so do nothing!
+      if(isZero(length))
+      {
+        return;
+      }
+
+      // Use the larger movement.
+      float dd;
+      if(m_mode != Mode::Examine)
+      {
+        dd = -delta[1];
+      }
+      else
+      {
+        dd = fabs(delta[0]) > fabs(delta[1]) ? delta[0] : -delta[1];
+      }
+
+      float factor = m_speed * dd / length;
+
+      // Adjust speed based on distance.
+      length /= 10;
+      length = length < 0.001f ? 0.001f : length;
+      factor *= length;
+
+      // Don't move to or through the point of interest.
+      if (1.0f <= factor)
+      {
+        return;
+      }
+
+      z *= factor;
+
+      // Not going up
+      if(m_mode == Mode::Walk)
+      {
+        if(m_upVector.y > m_upVector.z)
+        {
+          z.y = 0;
+        }
+        else
+        {
+          z.z = 0;
+        }
+      }
+
+      m_cameraPosition += z;
+
+      // In fly mode, the interest moves with us.
+      if(m_mode != Mode::Examine)
+      {
+        m_centerPosition += z;
+      }
+    }
+
+    void CameraManipulator::motion(glm::ivec2 const& position, Action action)
+    {
+      glm::vec2 delta(float(position[0] - m_mousePosition[0]) / float(m_windowSize[0]), float(position[1] - m_mousePosition[1]) / float(m_windowSize[1]));
+
+      switch(action)
+      {
+        case Action::Orbit:
+          if(m_mode == Mode::Trackball)
+          {
+            orbit(delta, true);  // trackball(position);
+          }
+          else
+          {
+            orbit(delta, false);
+          }
+          break;
+        case Action::Dolly:
+          dolly(delta);
+          break;
+        case Action::Pan:
+          pan(delta);
+          break;
+        case Action::LookAround:
+          if(m_mode == Mode::Trackball)
+          {
+            trackball(position);
+          }
+          else
+          {
+            orbit(glm::vec2(delta[0], -delta[1]), true);
+          }
+          break;
+      }
+
+      update();
+
+      m_mousePosition = position;
+    }
+
+    void CameraManipulator::orbit(glm::vec2 const& delta, bool invert)
+    {
+      if(isZero(delta[0]) && isZero(delta[1]))
+      {
+        return;
+      }
+
+      // Full width will do a full turn
+      float dx = delta[0] * float(glm::two_pi<float>());
+      float dy = delta[1] * float(glm::two_pi<float>());
+
+      // Get the camera
+      glm::vec3 origin(invert ? m_cameraPosition : m_centerPosition);
+      glm::vec3 position(invert ? m_centerPosition : m_cameraPosition);
+
+      // Get the length of sight
+      glm::vec3 centerToEye(position - origin);
+      float     radius = glm::length(centerToEye);
+      centerToEye      = glm::normalize(centerToEye);
+
+      // Find the rotation around the UP axis (Y)
+      glm::vec3 zAxis(centerToEye);
+      glm::mat4 yRotation = glm::rotate(-dx, m_upVector);
+
+      // Apply the (Y) rotation to the eye-center vector
+      glm::vec4 tmpVector = yRotation * glm::vec4(centerToEye.x, centerToEye.y, centerToEye.z, 0.0f);
+      centerToEye         = glm::vec3(tmpVector.x, tmpVector.y, tmpVector.z);
+
+      // Find the rotation around the X vector: cross between eye-center and up (X)
+      glm::vec3 xAxis     = glm::cross(m_upVector, zAxis);
+      xAxis               = glm::normalize(xAxis);
+      glm::mat4 xRotation = glm::rotate(-dy, xAxis);
+
+      // Apply the (X) rotation to the eye-center vector
+      tmpVector = xRotation * glm::vec4(centerToEye.x, centerToEye.y, centerToEye.z, 0);
+      glm::vec3 rotatedVector(tmpVector.x, tmpVector.y, tmpVector.z);
+      if(sign(rotatedVector.x) == sign(centerToEye.x))
+      {
+        centerToEye = rotatedVector;
+      }
+
+      // Make the vector as long as it was originally
+      centerToEye *= radius;
+
+      // Finding the new position
+      glm::vec3 newPosition = centerToEye + origin;
+
+      if(!invert)
+      {
+        m_cameraPosition = newPosition;  // Normal: change the position of the camera
+      }
+      else
+      {
+        m_centerPosition = newPosition;  // Inverted: change the interest point
+      }
+    }
+
+    void CameraManipulator::pan(glm::vec2 const& delta)
+    {
+      glm::vec3 z(m_cameraPosition - m_centerPosition);
+      float     length = static_cast<float>(glm::length(z)) / 0.785f;  // 45 degrees
+      z                = glm::normalize(z);
+      glm::vec3 x      = glm::normalize(glm::cross(m_upVector, z));
+      glm::vec3 y      = glm::normalize(glm::cross(z, x));
+      x *= -delta[0] * length;
+      y *= delta[1] * length;
+
+      if(m_mode == Mode::Fly)
+      {
+        x = -x;
+        y = -y;
+      }
+
+      m_cameraPosition += x + y;
+      m_centerPosition += x + y;
+    }
+
+    double CameraManipulator::projectOntoTBSphere(const glm::vec2& p)
+    {
+      double z;
+      double d = length(p);
+      if(d < trackballSize * 0.70710678118654752440)
+      {
+        // inside sphere
+        z = sqrt(trackballSize * trackballSize - d * d);
+      }
+      else
+      {
+        // on hyperbola
+        double t = trackballSize / 1.41421356237309504880;
+        z        = t * t / d;
+      }
+
+      return z;
+    }
+
+    void CameraManipulator::trackball(glm::ivec2 const& position)
+    {
+      glm::vec2 p0(2 * (m_mousePosition[0] - m_windowSize[0] / 2) / double(m_windowSize[0]),
+                   2 * (m_windowSize[1] / 2 - m_mousePosition[1]) / double(m_windowSize[1]));
+      glm::vec2 p1(2 * (position[0] - m_windowSize[0] / 2) / double(m_windowSize[0]), 2 * (m_windowSize[1] / 2 - position[1]) / double(m_windowSize[1]));
+
+      // determine the z coordinate on the sphere
+      glm::vec3 pTB0(p0[0], p0[1], projectOntoTBSphere(p0));
+      glm::vec3 pTB1(p1[0], p1[1], projectOntoTBSphere(p1));
+
+      // calculate the rotation axis via cross product between p0 and p1
+      glm::vec3 axis = glm::cross(pTB0, pTB1);
+      axis           = glm::normalize(axis);
+
+      // calculate the angle
+      float t = glm::length(pTB0 - pTB1) / (2.f * trackballSize);
+
+      // clamp between -1 and 1
+      if(t > 1.0f)
+      {
+        t = 1.0f;
+      }
+      else if(t < -1.0f)
+      {
+        t = -1.0f;
+      }
+
+      float rad = 2.0f * asin(t);
+
+      {
+        glm::vec4 rot_axis = m_matrix * glm::vec4(axis, 0);
+        glm::mat4 rot_mat  = glm::rotate(rad, glm::vec3(rot_axis.x, rot_axis.y, rot_axis.z));
+
+        glm::vec3 pnt  = m_cameraPosition - m_centerPosition;
+        glm::vec4 pnt2 = rot_mat * glm::vec4(pnt.x, pnt.y, pnt.z, 1);
+        m_cameraPosition          = m_centerPosition + glm::vec3(pnt2.x, pnt2.y, pnt2.z);
+        glm::vec4 up2  = rot_mat * glm::vec4(m_upVector.x, m_upVector.y, m_upVector.z, 0);
+        m_upVector           = glm::vec3(up2.x, up2.y, up2.z);
+      }
+    }
+
+    void CameraManipulator::update()
+    {
+      m_matrix = glm::lookAt(m_cameraPosition, m_centerPosition, m_upVector);
+
+      if(!isZero(m_roll))
+      {
+        glm::mat4 rot = glm::rotate(m_roll, glm::vec3(0, 0, 1));
+        m_matrix      = m_matrix * rot;
+      }
+    }
+
+  } // namespace su
+}  // namespace vk

samples/RayTracing/CameraManipulator.hpp

@@ -0,0 +1,79 @@
+// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <glm/glm.hpp>
+#include <vulkan/vulkan.hpp>
+
+namespace vk
+{
+  namespace su
+  {
+    class CameraManipulator
+    {
+      public:
+        enum class Action { None, Orbit, Dolly, Pan, LookAround };
+        enum class Mode { Examine, Fly, Walk, Trackball };
+        enum class MouseButton { None, Left, Middle, Right };
+        enum class ModifierFlagBits { Shift = 1, Ctrl = 2, Alt = 4 };
+        using ModifierFlags = vk::Flags<ModifierFlagBits, uint32_t>;
+
+      public:
+        CameraManipulator();
+
+        glm::vec3 const& getCameraPosition() const;
+        glm::vec3 const& getCenterPosition() const;
+        glm::mat4 const& getMatrix() const;
+        Mode getMode() const;
+        glm::ivec2 const& getMousePosition() const;
+        float getRoll() const;
+        float getSpeed() const;
+        glm::vec3 const& getUpVector() const;
+        glm::u32vec2 const& getWindowSize() const;
+        Action mouseMove(glm::ivec2 const& position, MouseButton mouseButton, ModifierFlags & modifiers);
+        void setLookat(const glm::vec3& cameraPosition, const glm::vec3& centerPosition, const glm::vec3& upVector);
+        void setMode(Mode mode);
+        void setMousePosition(glm::ivec2 const& position);
+        void setRoll(float roll);   // roll in radians
+        void setSpeed(float speed);
+        void setWindowSize(glm::ivec2 const& size);
+        void wheel(int value);
+
+      private:
+        void dolly(glm::vec2 const& delta);
+        void motion(glm::ivec2 const& position, Action action = Action::None);
+        void orbit(glm::vec2 const& delta, bool invert = false);
+        void pan(glm::vec2 const& delta);
+        double projectOntoTBSphere(const glm::vec2& p);
+        void trackball(glm::ivec2 const& position);
+        void update();
+
+      private:
+        glm::vec3 m_cameraPosition  = glm::vec3(10, 10, 10);
+        glm::vec3 m_centerPosition  = glm::vec3(0, 0, 0);
+        glm::vec3 m_upVector        = glm::vec3(0, 1, 0);
+        float     m_roll            = 0;                      // Rotation around the Z axis in RAD
+        glm::mat4 m_matrix          = glm::mat4(1);
+
+        glm::u32vec2 m_windowSize   = glm::u32vec2(1, 1);
+
+        float       m_speed         = 30.0f;
+        glm::ivec2  m_mousePosition = glm::ivec2(0, 0);
+
+        Mode m_mode                 = Mode::Examine;
+    };
+  } // namespace su
+}  // namespace vk

samples/utils/shaders.cpp

@@ -33,6 +33,14 @@ namespace vk
         case vk::ShaderStageFlagBits::eGeometry:                return EShLangGeometry;
         case vk::ShaderStageFlagBits::eFragment:                return EShLangFragment;
         case vk::ShaderStageFlagBits::eCompute:                 return EShLangCompute;
+        case vk::ShaderStageFlagBits::eRaygenNV:                return EShLangRayGenNV;
+        case vk::ShaderStageFlagBits::eAnyHitNV:                return EShLangAnyHitNV;
+        case vk::ShaderStageFlagBits::eClosestHitNV:            return EShLangClosestHitNV;
+        case vk::ShaderStageFlagBits::eMissNV:                  return EShLangMissNV;
+        case vk::ShaderStageFlagBits::eIntersectionNV:          return EShLangIntersectNV;
+        case vk::ShaderStageFlagBits::eCallableNV:              return EShLangCallableNV;
+        case vk::ShaderStageFlagBits::eTaskNV:                  return EShLangTaskNV;
+        case vk::ShaderStageFlagBits::eMeshNV:                  return EShLangMeshNV;
         default:
           assert(false && "Unknown shader stage");
           return EShLangVertex;

samples/utils/utils.cpp

@@ -537,14 +537,15 @@ namespace vk
     }
 
     void updateDescriptorSets(vk::UniqueDevice const& device, vk::UniqueDescriptorSet const& descriptorSet,
-                              std::vector<std::tuple<vk::DescriptorType, vk::UniqueBuffer const&, vk::UniqueBufferView const&>> const& bufferData, vk::su::TextureData const& textureData)
+                              std::vector<std::tuple<vk::DescriptorType, vk::UniqueBuffer const&, vk::UniqueBufferView const&>> const& bufferData, vk::su::TextureData const& textureData,
+                              uint32_t bindingOffset)
     {
       std::vector<vk::DescriptorBufferInfo> bufferInfos;
       bufferInfos.reserve(bufferData.size());
 
       std::vector<vk::WriteDescriptorSet> writeDescriptorSets;
       writeDescriptorSets.reserve(bufferData.size() + 1);
-      uint32_t dstBinding = 0;
+      uint32_t dstBinding = bindingOffset;
       for (auto const& bd : bufferData)
       {
         bufferInfos.push_back(vk::DescriptorBufferInfo(*std::get<1>(bd), 0, VK_WHOLE_SIZE));
@@ -559,14 +560,14 @@ namespace vk
 
     void updateDescriptorSets(vk::UniqueDevice const& device, vk::UniqueDescriptorSet const& descriptorSet,
                               std::vector<std::tuple<vk::DescriptorType, vk::UniqueBuffer const&, vk::UniqueBufferView const&>> const& bufferData,
-                              std::vector<vk::su::TextureData> const& textureData)
+                              std::vector<vk::su::TextureData> const& textureData, uint32_t bindingOffset)
     {
       std::vector<vk::DescriptorBufferInfo> bufferInfos;
       bufferInfos.reserve(bufferData.size());
 
       std::vector<vk::WriteDescriptorSet> writeDescriptorSets;
       writeDescriptorSets.reserve(bufferData.size() + textureData.empty() ? 0 : 1);
-      uint32_t dstBinding = 0;
+      uint32_t dstBinding = bindingOffset;
       for (auto const& bd : bufferData)
       {
         bufferInfos.push_back(vk::DescriptorBufferInfo(*std::get<1>(bd), 0, VK_WHOLE_SIZE));
@@ -684,18 +685,23 @@ namespace vk
       }
     }
 
+    CheckerboardImageGenerator::CheckerboardImageGenerator(std::array<uint8_t, 3> const& rgb0, std::array<uint8_t, 3> const& rgb1)
+      : m_rgb0(rgb0)
+      , m_rgb1(rgb1)
+    {}
+
     void CheckerboardImageGenerator::operator()(void* data, vk::Extent2D &extent) const
     {
       // Checkerboard of 16x16 pixel squares
-      unsigned char *pImageMemory = static_cast<unsigned char*>(data);
+      uint8_t *pImageMemory = static_cast<uint8_t *>(data);
       for (uint32_t row = 0; row < extent.height; row++)
       {
         for (uint32_t col = 0; col < extent.width; col++)
         {
-          unsigned char rgb = (((row & 0x10) == 0) ^ ((col & 0x10) == 0)) * 255;
-          pImageMemory[0] = rgb;
-          pImageMemory[1] = rgb;
-          pImageMemory[2] = rgb;
+          std::array<uint8_t, 3> const& rgb = (((row & 0x10) == 0) ^ ((col & 0x10) == 0)) ? m_rgb1 : m_rgb0;
+          pImageMemory[0] = rgb[0];
+          pImageMemory[1] = rgb[1];
+          pImageMemory[2] = rgb[2];
           pImageMemory[3] = 255;
           pImageMemory += 4;
         }

samples/utils/utils.hpp

@@ -42,34 +42,34 @@ namespace vk
       }
 
       template <typename DataType>
-      void upload(vk::UniqueDevice const& device, std::vector<DataType> const& data) const
+      void upload(vk::UniqueDevice const& device, std::vector<DataType> const& data, size_t stride = 0) const
       {
-        assert((m_propertyFlags & vk::MemoryPropertyFlagBits::eHostCoherent) && (m_propertyFlags & vk::MemoryPropertyFlagBits::eHostVisible));
+        assert(m_propertyFlags & vk::MemoryPropertyFlagBits::eHostVisible);
 
-        size_t dataSize = data.size() * sizeof(DataType);
-        assert(dataSize <= m_size);
+        size_t elementSize = stride ? stride : sizeof(DataType);
+        assert(sizeof(DataType) <= elementSize);
 
-        void* dataPtr = device->mapMemory(*this->deviceMemory, 0, dataSize);
-        memcpy(dataPtr, data.data(), dataSize);
-        device->unmapMemory(*this->deviceMemory);
+        copyToDevice(device, deviceMemory, data.data(), data.size(), elementSize);
       }
 
       template <typename DataType>
-      void upload(vk::PhysicalDevice const& physicalDevice, vk::UniqueDevice const& device, vk::UniqueCommandPool const& commandPool, vk::Queue queue, std::vector<DataType> const& data) const
+      void upload(vk::PhysicalDevice const& physicalDevice, vk::UniqueDevice const& device, vk::UniqueCommandPool const& commandPool, vk::Queue queue, std::vector<DataType> const& data,
+                  size_t stride) const
       {
         assert(m_usage & vk::BufferUsageFlagBits::eTransferDst);
         assert(m_propertyFlags & vk::MemoryPropertyFlagBits::eDeviceLocal);
 
-        size_t dataSize = data.size() * sizeof(DataType);
+        size_t elementSize = stride ? stride : sizeof(DataType);
+        assert(sizeof(DataType) <= elementSize);
+
+        size_t dataSize = data.size() * elementSize;
         assert(dataSize <= m_size);
 
         vk::su::BufferData stagingBuffer(physicalDevice, device, dataSize, vk::BufferUsageFlagBits::eTransferSrc);
-        void* dataPtr = device->mapMemory(*stagingBuffer.deviceMemory, 0, dataSize);
-        memcpy(dataPtr, data.data(), dataSize);
-        device->unmapMemory(*stagingBuffer.deviceMemory);
+        copyToDevice(device, stagingBuffer.deviceMemory, data.data(), data.size(), elementSize);
 
-        vk::UniqueCommandBuffer commandBuffer = std::move(device->allocateCommandBuffersUnique(vk::CommandBufferAllocateInfo(*commandPool, vk::CommandBufferLevel::ePrimary, 1)).front());
-        vk::su::oneTimeSubmit(commandBuffer, queue, [&]() { commandBuffer->copyBuffer(*stagingBuffer.buffer, *this->buffer, vk::BufferCopy(0, 0, dataSize)); });
+        vk::su::oneTimeSubmit(device, commandPool, queue,
+                              [&](vk::UniqueCommandBuffer const& commandBuffer) { commandBuffer->copyBuffer(*stagingBuffer.buffer, *this->buffer, vk::BufferCopy(0, 0, dataSize)); });
       }
 
       vk::UniqueBuffer        buffer;
@@ -121,7 +121,13 @@ namespace vk
     class CheckerboardImageGenerator
     {
     public:
+      CheckerboardImageGenerator(std::array<uint8_t, 3> const& rgb0 = {0, 0, 0}, std::array<uint8_t, 3> const& rgb1 = {255, 255, 255});
+
       void operator()(void* data, vk::Extent2D &extent) const;
+
+    private:
+      std::array<uint8_t, 3> const& m_rgb0;
+      std::array<uint8_t, 3> const& m_rgb1;
     };
 
     class MonochromeImageGenerator
@@ -207,7 +213,7 @@ namespace vk
     }
 
     template <class T>
-    void copyToDevice(vk::UniqueDevice &device, vk::UniqueDeviceMemory &memory, T const* pData, size_t count, size_t stride = sizeof(T))
+    void copyToDevice(vk::UniqueDevice const& device, vk::UniqueDeviceMemory const& memory, T const* pData, size_t count, size_t stride = sizeof(T))
     {
       assert(sizeof(T) <= stride);
       uint8_t* deviceData = static_cast<uint8_t*>(device->mapMemory(memory.get(), 0, count * stride));
@@ -227,7 +233,7 @@ namespace vk
     }
 
     template <class T>
-    void copyToDevice(vk::UniqueDevice &device, vk::UniqueDeviceMemory &memory, T const& data)
+    void copyToDevice(vk::UniqueDevice const& device, vk::UniqueDeviceMemory const& memory, T const& data)
     {
       copyToDevice<T>(device, memory, &data, 1);
     }
@@ -238,16 +244,23 @@ namespace vk
       return v < lo ? lo : hi < v ? hi : v;
     }
 
-    template <typename Func, typename... Args>
-    void oneTimeSubmit(vk::UniqueCommandBuffer const& commandBuffer, vk::Queue const& queue, Func const& func, Args... args)
+    template <typename Func>
+    void oneTimeSubmit(vk::UniqueCommandBuffer const& commandBuffer, vk::Queue const& queue, Func const& func)
     {
       commandBuffer->begin(vk::CommandBufferBeginInfo(vk::CommandBufferUsageFlagBits::eOneTimeSubmit));
-      func(args...);
+      func(commandBuffer);
       commandBuffer->end();
       queue.submit(vk::SubmitInfo(0, nullptr, nullptr, 1, &(*commandBuffer)), nullptr);
       queue.waitIdle();
     }
 
+    template <typename Func>
+    void oneTimeSubmit(vk::UniqueDevice const& device, vk::UniqueCommandPool const& commandPool, vk::Queue const& queue, Func const& func)
+    {
+      vk::UniqueCommandBuffer commandBuffer = std::move(device->allocateCommandBuffersUnique(vk::CommandBufferAllocateInfo(*commandPool, vk::CommandBufferLevel::ePrimary, 1)).front());
+      oneTimeSubmit(commandBuffer, queue, func);
+    }
+
     vk::UniqueDeviceMemory allocateMemory(vk::UniqueDevice const& device, vk::PhysicalDeviceMemoryProperties const& memoryProperties, vk::MemoryRequirements const& memoryRequirements,
                                           vk::MemoryPropertyFlags memoryPropertyFlags);
     vk::UniqueCommandPool createCommandPool(vk::UniqueDevice &device, uint32_t queueFamilyIndex);
@@ -277,10 +290,11 @@ namespace vk
     void setImageLayout(vk::UniqueCommandBuffer const& commandBuffer, vk::Image image, vk::Format format, vk::ImageLayout oldImageLayout, vk::ImageLayout newImageLayout);
     void submitAndWait(vk::UniqueDevice &device, vk::Queue queue, vk::UniqueCommandBuffer &commandBuffer);
     void updateDescriptorSets(vk::UniqueDevice const& device, vk::UniqueDescriptorSet const& descriptorSet,
-                              std::vector<std::tuple<vk::DescriptorType, vk::UniqueBuffer const&, vk::UniqueBufferView const&>> const& bufferData, vk::su::TextureData const& textureData);
+                              std::vector<std::tuple<vk::DescriptorType, vk::UniqueBuffer const&, vk::UniqueBufferView const&>> const& bufferData, vk::su::TextureData const& textureData,
+                              uint32_t bindingOffset = 0);
     void updateDescriptorSets(vk::UniqueDevice const& device, vk::UniqueDescriptorSet const& descriptorSet,
                               std::vector<std::tuple<vk::DescriptorType, vk::UniqueBuffer const&, vk::UniqueBufferView const&>> const& bufferData,
-                              std::vector<vk::su::TextureData> const& textureData);
+                              std::vector<vk::su::TextureData> const& textureData, uint32_t bindingOffset = 0);
 
 #if defined(VK_USE_PLATFORM_WIN32_KHR)
     HWND initializeWindow(std::string const& className, std::string const& windowName, LONG width, LONG height);